The preparation and reactions of alkynylphosphonate hexacarbonyldicobalt complexes
作者:R.John Baxter、Graham R. Knox、Mark McLaughlin、Peter L. Pauson、Mark D. Spicer
DOI:10.1016/s0022-328x(98)01201-7
日期:1999.5
The preparation of a series of hexacarbonyldicobalt alkynylphosphonate complexes, Co2(CO)6[R1CCP(O)(OR2)2] is reported. They are found to be unreactive under a range of conditions and this is ascribed to a combination of electron deficiency and alkyne π to phosphorus π-acceptor orbital interactions. Complexes of alkynyl carboxylates are more reactive. Reaction of diethyl 1-propynylphosphonate with
Mukaiyama reagent-promoted metal-free preparation of alkynyl sulfones and phosphonates under mild conditions
作者:Danyang Qi、Wanrong Dong、Zhihong Peng、Yingjun Zhang、Delie An
DOI:10.1016/j.tet.2019.06.035
日期:2019.8
An efficient and mild route for the formation sulfur or phosphor-substituted alkynes was herein demonstrated. The Mukaiyama reagent-mediated transformation started from easily-accessible substrates without carbon-carbon triple bonds, and the reaction proceeded undermildconditions (room temperature) in a one-pot manner, requiring for no transition metal-catalysts. The practical protocol featured for
Room temperature alkynylation of H-phosphi(na)tes and secondary phosphine oxides with ethynylbenziodoxolone (EBX) reagents
作者:C. Chun Chen、Jerome Waser
DOI:10.1039/c4cc06851c
日期:——
Highly efficient protocols for the alkynylation of H-phosphi(na)tes and secondary phosphine oxides with silyl, aryl and alkyl ethynyl-benziodoxolone (EBX) reagents are reported. Alkynyl phosphorus compounds were obtained in 69-93% yield without the need for a transition metal catalyst at room temperature under open flask conditions.
作者:Jong Eoun Hong、Chi-Wan Lee、Youngcheol Kwon、Dong Young Oh
DOI:10.1080/00397919608003523
日期:1996.4
Abstract 1-Alkynylphosphonates 4 are prepared by the in situ β-elimination of enol phosphates 3, which are readily generated by the reaction of sodium enolate of 2-oxophosphonate with diethyl chlorophosphate.
Ruthenium-Catalyzed Homo Diels–Alder [2 + 2 + 2] Cycloadditions of Alkynyl Phosphonates with Bicyclo[2.2.1]hepta-2,5-diene
作者:Tanner J. Kettles、Neil Cockburn、William Tam
DOI:10.1021/jo2010928
日期:2011.8.19
Ruthenium-catalyzed homo Diels–Alder [2 + 2 + 2] cycloadditions between alkynyl phosphonates and bicyclo[2.2.1]hepta-2,5-diene were studied. The observed reactivity was found to be dependent on the presence of the phosphonate moiety. The Ru-catalyzed cycloaddition was compatible with a variety of aromatic and aliphatic substituted alkynyl phosphonates, providing the corresponding phosphonate substituted